AD7658 Analog Devices, AD7658 Datasheet - Page 16
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AD7658
Manufacturer Part Number
AD7658
Description
250 kSPS, 6-Channel,SimultaneousSampling, Bipolar 12-Bit A/D Converter
Manufacturer
Analog Devices
Datasheet
1.AD7656.pdf
(32 pages)
Specifications of AD7658
Resolution (bits)
12bit
# Chan
6
Sample Rate
250kSPS
Interface
Par,Ser,SPI
Analog Input Type
SE-Bip
Ain Range
Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 5.0V
Adc Architecture
SAR
Pkg Type
QFP
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
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Manufacturer:
ADI
Quantity:
329
Company:
Part Number:
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Manufacturer:
Analog Devices Inc
Quantity:
10 000
Part Number:
AD7658BSTZ
Manufacturer:
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Company:
Part Number:
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Manufacturer:
Analog Devices Inc
Quantity:
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Company:
Part Number:
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Manufacturer:
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Quantity:
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Company:
Part Number:
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Manufacturer:
Analog Devices Inc
Quantity:
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Company:
Part Number:
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Manufacturer:
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Quantity:
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AD7656/AD7657/AD7658
2.510
2.508
2.506
2.504
2.502
2.500
2.498
2.496
2.494
2.492
3500
3000
2500
2000
1500
1000
3.20
3.15
3.10
3.05
3.00
2.95
2.90
2.85
2.80
2.75
2.70
500
0
–55
–55
–5
0
AV
V
DD
Figure 16. Reference Voltage vs. Temperature
Figure 17. Conversion Time vs. Temperature
CC
/V
–35
–35
Figure 18. AD7656 Histogram of Codes
/DV
57
–4
SS
CC
= ±12V
–15
–15
/V
392
–3
DRIVE
5
5
= +5V
2806
TEMPERATURE (°C)
TEMPERATURE (°C)
–2
25
25
CODE
3212
–1
45
45
AV
V
V
AV
INTERNAL REFERENCE
8192 SAMPLES
1532
DD
DD
0
CC
CC
65
/V
65
/V
/DV
/DV
SS
SS
168
CC
= ±12V
= ±15V
CC
1
85
85
/V
/V
DRIVE
DRIVE
25
105
105
2
= +5V
= +5V
125
125
3
0
Rev. C | Page 16 of 32
–100
–101
–102
–103
–104
–105
–106
–107
87.0
86.5
86.0
85.5
85.0
84.5
84.0
83.5
83.0
100
90
80
70
60
50
40
–40
–40
30
f
f
INTERNAL REFERENCE
±5V RANGE,
AV
V
f
f
INTERNAL REFERENCE
SAMPLE
IN
SAMPLE
IN
DD
Figure 19. PSRR vs. Supply Ripple Frequency
= 50kHz
CC
= 50kHz
80
–20
–20
/V
Figure 21. AD7656 THD vs. Temperature
Figure 20. AD7656 SNR vs. Temperature
/DV
SS
= 250kSPS
= 250kSPS
CC
= ±12V
130
/V
0
0
SUPPLY RIPPLE FREQUENCY (kHz)
DRIVE
V
±5V RANGE,
AV
180
DD
CC
20
/V
20
= +5V
TEMPERATURE (°C)
/DV
TEMPERATURE (°C)
SS
230
= ±12V
CC
40
40
/V
±10V RANGE,
AV
V
DRIVE
280
DD
±10V RANGE,
AV
V
CC
/V
DD
60
60
CC
/DV
SS
= +5V
/V
330
/DV
SS
f
±2 × V
INTERNAL REFERENCE
T
f
100nF ON V
= ±16.5V
CC
SAMPLE
IN
V
A
DD
80
CC
= ±16.5V
80
= 10kHz
/V
= 25°C
380
DRIVE
/V
REF
V
DRIVE
= 250kSPS
SS
100
100
RANGE
430
= +5.25V
DD
= +5.25V
AND V
120
120
480
SS
530
140
140